Fuel lock for motor cars



Li1 A. KENNEDY.

FUEL LOCK FOR MOTOR CARS. APPLICATION FILED FEB. I, 1921. yyo PaftnbdJan. 1U, 1922',

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STATES PATENT LEO A. KENNEDY, OF DERBY, KANSAS.

A.'ElJlEL LOCK FOR MOTOR CARS.

Application led February 1, 1921.

To @ZZ iii/lem t may concern:

Be it known that I, Luo A. KENNEDY, a citizen ot' the United States, anda resident ot' Derby in the county ot Sedgwick and State of kansas, haveinvented certain new and use'iul Improvements in Fuel Locks for lilotorCars, of which the following is a specication.

My invention relates to iuel locks for motor cars, and has for itsobject the provision of simple, eilective means for preventing the theftor unauthorized use of motor cars driven'by internal combustion engines,by locking oil the fuel supply 'from the carbureter.

rlhe invention is embodied in the combination of a valve-chamberprovided with an inlet and an outlet for the liquid fuel, a. valve insaid chamber adapted to open or close the Juel port, a pin-tumbler lock,and a cam actuated by said lock and adapted to open and close the valve,the valve being in closed position when the lock is locked.

The invention further consists in the peculiar details oic constructionand arrangement oi parts shown on the accompanying drawings, whichillustrate the preferred construction ot the device.

In said drawings, Fig. 1 is a rear elevan tion diagram of a gasolinetank equipped with the lock; F 2 is a top view of the device full size.with a portion of the top otl the tank; F ig. 3 is a vertical section0I" the complete device, taken on line Hl of Fig. 2; Fig. l is avertical section of the upper portion oi' the device, taken on line lVoit Fig. 2; Fig. 5 is a sectional detail view; Fig. (S is a sectionaldetail view taken on line Vl ot Fig. 5; and Fig. 7 .isa sectional detailview (enlarged) taken on line Vil of Fig. Ll, but with the cam inreverse position.

rl`he device is here shown as mounted on and within the regular fueltank.y and is best installed before the tank is assembled. rllbe flangedplate 1 is secured to the tank T with rivets 2. rl`he valve body l3 issecured to ring with screws 4;. ljlate l has an upstanding `llange 1 toreceive screws 5 which hold in position a block 7, in which are castrecesses which receive the lock proper, 8. the cam 9, and the connectingmeans between the lock and cam. rlhe lock 8 is a cylinder lock of theYale type.

When the removable cover 10 is off, the

Specification of Letters Patent.

Patented Jan. Tril, i922.

serial No. 441,692.

keyhole is exposed. The lock cylinder has a projecting lug 12 which liesin a head 13 oi a ca n-shaft la-e15, the 15 being rotatable in a holedrilled in the block 7. The squared portion le' ts in square opening` inthe cam 9. Block 7 and plate 1 are slotted as shown, to receive the cam.The slot e in said plate has a lug` l? on one side and at the centre ci"the slot. rl`he cam is formed with a lateral annular flange 1S, locatedto pass reelybeneath said lug 17, in order to prevent removal of theblock 7 except when the parts are in unlocked position. ln that portionof the flange 1S which is uppermost when the cam is in locked positionr`l cut a notch g, just large enough to pass freely over the liXed lug 17when the cam is in unlocked position. rlhe purpose ot this device willbe referred to below.

The valvebody is formed with three chambers, a, and c, Un web 19 is aguide 20, on which is threaded a packed gland 21. The stem 22 ot thedisc valve 23 abuts the rim oli' the cam. rlhe valve-closing spring 2lrests on the gland and is conlined by a flanged washer 25 which ishelddown by a pin 32. A nipple 26 communicates with chamber Z) and connectswith the delivery tube 27 which leads to the motor. The induction tube28 connects with a nipple 29 which communicates with chamber o. r:thebottoni cap 30 is simply a closure for the chamber c, and is shown asprovided with a nipple 31, closed by a cap Tube 28 may be connected tonipple 81, it so preierred,

lVith the valve closed (closing the i'uel port as shown) the fluidcannot pass from the tank into tube 2l'. By means ol" the lock 8, thecam 9 is locked in the position shown in Fig. 3. rlhe parts are to belelt in this position when the car is lett unattended. Bel'ore startingthe car. the lock must be turned a haltrevolution, which will causethe-am to depress the valve-stem and open the valve. rThe key is thenremoved and the cap 10 replaced. Should a thief remove the screws 5, theblock 7 will yet be non-removable. by reason of the cam-flange 1S beingheld down by the fixed lug 17.

This' lock valve need not necessarily be located in or upon the tank,for it may be installed in any convenient portion of a car, at slightexpense.

Having described my invention, claim as new and desire to secure byLetters Petent:

l. ln a device of the kind described, aplate having e slot therein, efixed lug projecting into said slot, a eatin having a interni curvediiange in which is et recess for said lug, seid earn entering said slet;zt leek Vfor actuating the cem, a valve actuated by the earn, a housing'or the cem and the lock,

said housing being secured to seid plate;V Ystud cani-Bange beingengagedwith said lug in yall positions of the cani except that in which thevalve is allowed to beV in open position, by said cam.

2. in a device' cf the kind described, a ixed plate having,` a slottherein, e fixed lug projecting` linto the slot, a rotary earn enteringthe slot, and arladteral flange on said cam; said flange engaging seidlug: and having t notch therein to pass over said lug When the cam is inat predetermined position.

' LEO A. KENNEDY.

`Witnesses v M. Y. CHARLES, E. SAWYER.

